Telecommunications Radioelectriques Et Telephoniques T.r.t.

Telecommunications Radioelectriques Et Telephoniques

Yves H Le Goffic

Alain B Forestier

Rene Tanguy

Roland Y Soulabail

Bernard Fino

In a data packet transmission system, a disturbing delay is produced for the speech channels during the transformation of the data packets into a regular multiplex. A transformation arrangement permitting to minimize this delay is comprised of a storage unit 1 in which the data are stored, for example, in the form of multi-frames, reading this memory being effected in a different sequence, packet-by-packet, by addressing means 4 in accordance with predetermined addressing rules for the reconstruction of a standard multiplex. Such an arrangement is advantageously used when data packets are transmitted at different rate speeds.

Arrangement for transforming data packets into a regular multiplex for a

Method of adjusting the interstation delay in an information transmission system comprising a large number of relay stations arranged in cascade and utilizing in one transmission direction the TDMA method, and a system to which such a delay adjusting method is applied. This method of adjusting the interstation delay in an information transmission system utilizing the TDMA principle can be advantageously used when the system comprises a large number of relay stations in a cascade arrangement. An adjusting range is imposed on the delay to be allocated to the transmission of data in order to avoid information jumps which may provoke overlapping on reception of these data. The adjustment of the delay is effected by starting with the relay station nearest to the central station, then the following relay station etc., and ending with the adjustment of the terminal station involved.

System and method of adjusting the interstation delay in an information

A system for transmitting information between at least two stations the information originating from free or engaged channels in a multiplex frame, each station comprising at least one transmitting circuit and one receiving circuit powered from a power supply, and means for detecting the free and engaged channels to provide a procedure for establishing a multiplex formed by an elementary frame in which the engaged channels are grouped side-by-side in the elementary frame and means for reducing the power consumption of the transmitting and receiving circuits.

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Lannion, France

Yves H Le Goffic